JP6055342B2 - Integrated non-contact probe - Google Patents

Integrated non-contact probe Download PDF

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JP6055342B2
JP6055342B2 JP2013050490A JP2013050490A JP6055342B2 JP 6055342 B2 JP6055342 B2 JP 6055342B2 JP 2013050490 A JP2013050490 A JP 2013050490A JP 2013050490 A JP2013050490 A JP 2013050490A JP 6055342 B2 JP6055342 B2 JP 6055342B2
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contact
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cable
voltage
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JP2014178126A (en
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徳仁 平澤
徳仁 平澤
村川　一雄
一雄 村川
秀紀 伊藤
秀紀 伊藤
雄一郎 奥川
雄一郎 奥川
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Nippon Telegraph and Telephone East Corp
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Description

本発明は、被測定ケーブルと大地間の電圧および電流を同時に測定できる一体型非接触プローブに関するものである。   The present invention relates to an integrated non-contact probe that can simultaneously measure voltage and current between a cable under measurement and the ground.

従来においては、非接触型電圧プローブを用いることで、被測定ケーブルと大地間の電圧を測定できる。また、非接触型電流プローブを用いれば、被測定ケーブルに流れる電流を測定できる。   Conventionally, the voltage between the cable to be measured and the ground can be measured by using a non-contact type voltage probe. If a non-contact type current probe is used, the current flowing through the cable to be measured can be measured.

「容量性電圧プローブ」、［ｏｎｌｉｎｅ］、ＮＴＴ ＡＴ、［平成２５年２月１日検索］、インターネット＜ＵＲＬ：http://www.ntt-at.co.jp/page.jsp?id=1793&content_id=351＞“Capacitive voltage probe”, [online], NTT AT, [Search February 1, 2013], Internet <URL: http://www.ntt-at.co.jp/page.jsp?id=1793&content_id = 351>

しかしながら、非接触型電圧プローブと非接触型電流プローブを別々に使用することは、操作性の点で好ましくなく、改善が要望される。   However, the separate use of the non-contact type voltage probe and the non-contact type current probe is not preferable in terms of operability, and improvement is desired.

本発明は、上記の課題に鑑みてなされたものであり、その目的とするところは、被測定ケーブルと大地間の電圧および電流を同時に測定できる一体型非接触プローブを提供することにある。   The present invention has been made in view of the above problems, and an object of the present invention is to provide an integrated non-contact probe capable of simultaneously measuring the voltage and current between the cable to be measured and the ground.

上記の課題を解決するために、本発明の一体型非接触プローブは、被測定ケーブルを取り囲んで前記被測定ケーブルと大地間の電圧を測定する非接触型電圧プローブと、前記被測定ケーブルを取り囲んで前記被測定ケーブルに流れる電流を測定する非接触型電流プローブとを備え、前記非接触型電圧プローブと前記非接触型電流プローブとが、前記被測定ケーブルの長さ方向での同じ位置において、前記被測定ケーブルを中心とする同心円状に配置され、前記非接触型電圧プローブは、前記被測定ケーブルを導電性スポンジの平面部分どうしで挟み、前記導電性スポンジと大地間の電圧を測定するように構成されることを特徴とする。 In order to solve the above-mentioned problems, an integrated non-contact probe of the present invention surrounds a cable to be measured and surrounds the cable to be measured, a non-contact voltage probe that measures a voltage between the cable to be measured and the ground. And a non-contact type current probe that measures the current flowing through the cable to be measured, and the non-contact type voltage probe and the non-contact type current probe are at the same position in the length direction of the cable to be measured. The concentric circles are arranged around the cable to be measured, and the non-contact voltage probe sandwiches the cable to be measured between flat portions of the conductive sponge and measures the voltage between the conductive sponge and the ground. characterized Rukoto configured.

例えば、前記非接触型電圧プローブは、前記被測定ケーブルを導電性スポンジで挟み、前記導電性スポンジと大地間の電圧を測定するように構成される。例えば、前記非接触型電圧プローブは、前記被測定ケーブルの周囲方向において第１の非接触型電圧プローブ部分と第２の非接触型電圧プローブ部分に分割され、前記非接触型電流プローブは、前記被測定ケーブルの周囲方向において第１の非接触型電流プローブ部分と第２の非接触型電流プローブ部分に分割され、前記一体型非接触プローブは、前記第１の非接触型電圧プローブ部分と前記第１の非接触型電流プローブ部分とを収容して保持する半円筒状の第１外装部と、前記第２の非接触型電圧プローブ部分と前記第２の非接触型電流プローブ部分とを収容して保持する半円筒状の第２外装部と、前記第１外装部における一方の直線状縁部と前記第２外装部における一方の直線状縁部とを接続する蝶番とを備える。   For example, the non-contact voltage probe is configured to measure the voltage between the conductive sponge and the ground by sandwiching the measured cable with a conductive sponge. For example, the non-contact type voltage probe is divided into a first non-contact type voltage probe portion and a second non-contact type voltage probe portion in the circumferential direction of the cable to be measured. A first non-contact type current probe portion and a second non-contact type current probe portion are divided in a peripheral direction of the cable to be measured, and the integrated non-contact probe includes the first non-contact type voltage probe portion and the first non-contact type voltage probe portion. A semi-cylindrical first exterior portion that receives and holds the first non-contact type current probe portion, the second non-contact type voltage probe portion, and the second non-contact type current probe portion. And holding a semi-cylindrical second exterior part, and a hinge connecting one linear edge part of the first exterior part and one linear edge part of the second exterior part.

例えば、前記第１の非接触型電圧プローブ部分と前記第２の非接触型電圧プローブ部分はそれぞれ、半円柱状の導電性スポンジを備え、前記被測定ケーブルを前記各導電性スポンジの平面部分どうしで挟み、前記各導電性スポンジと大地間の電圧を測定するように構成されたことを特徴とする。   For example, each of the first non-contact type voltage probe portion and the second non-contact type voltage probe portion includes a semi-cylindrical conductive sponge, and the measured cable is connected between the flat portions of the respective conductive sponges. And the voltage between each of the conductive sponges and the ground is measured.

本発明の一体型非接触プローブによれば、被測定ケーブルと大地間の電圧および電流を同時に測定できる。   According to the integrated non-contact probe of the present invention, the voltage and current between the cable to be measured and the ground can be measured simultaneously.

本実施の形態に係る一体型非接触プローブの構成の一例を示す図である。It is a figure which shows an example of a structure of the integrated non-contact probe which concerns on this Embodiment.

以下、本発明の実施の形態について図面を参照して説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は、本実施の形態に係る本実施の形態に係る一体型非接触プローブの構成の一例を示す図であり、図１（ａ）は、被測定ケーブルに取り付けた状態を示し、図１（ｂ）は、取りつける前および取り外した後の状態を示す。   FIG. 1 is a diagram illustrating an example of a configuration of an integrated non-contact probe according to the present embodiment according to the present embodiment, and FIG. 1A illustrates a state where the probe is attached to a cable to be measured. (B) shows the state before attachment and after removal.

一体型非接触プローブ１は、被測定ケーブル２を切断、加工することなく、いわゆるクランプするタイプのプローブであり、被測定ケーブル２を取り囲んで被測定ケーブル２と大地間の電圧を測定する非接触型電圧プローブ１１と、被測定ケーブル２を取り囲んで被測定ケーブル２（詳しくは、その中の導体）に流れる電流を測定する非接触型電流プローブ１２とを備える。   The integrated non-contact probe 1 is a so-called clamp type probe that does not cut and process the cable to be measured 2 and is a non-contact that surrounds the cable to be measured 2 and measures the voltage between the cable to be measured 2 and the ground. And a non-contact type current probe 12 that surrounds the cable to be measured 2 and measures a current flowing through the cable to be measured 2 (specifically, a conductor therein).

一体型非接触プローブ１においては、非接触型電圧プローブ１１と非接触型電流プローブ１２とが、被測定ケーブル２の長さ方向での同じ位置において、被測定ケーブル２を中心とする同心円状に配置される。   In the integrated non-contact probe 1, the non-contact voltage probe 11 and the non-contact current probe 12 are concentrically centered on the measured cable 2 at the same position in the length direction of the measured cable 2. Be placed.

非接触型電圧プローブ１１は、被測定ケーブル２の周囲方向において第１の非接触型電圧プローブ部分１１Ａと第２の非接触型電圧プローブ部分１１Ｂに分割される。   The non-contact type voltage probe 11 is divided into a first non-contact type voltage probe portion 11A and a second non-contact type voltage probe portion 11B in the peripheral direction of the cable 2 to be measured.

非接触型電流プローブ１２は、被測定ケーブル２の周囲方向において第１の非接触型電流プローブ部分１２Ａと第２の非接触型電流プローブ部分１２Ｂに分割される。   The non-contact type current probe 12 is divided into a first non-contact type current probe portion 12A and a second non-contact type current probe portion 12B in the peripheral direction of the cable to be measured 2.

一体型非接触プローブ１は、さらに、第１の非接触型電圧プローブ部分１１Ａと第１の非接触型電流プローブ部分１２Ａとを収容して保持する半円筒状の第１外装部１３Ａと、第２の非接触型電圧プローブ部分１１Ｂと第２の非接触型電流プローブ部分１２Ｂとを収容して保持する半円筒状の第２外装部１３Ｂと、第１外装部１３Ａにおける一方の直線状縁部と第２外装部１３Ｂにおける一方の直線状縁部とを接続する蝶番１４と、第１外装部１３Ａにおける他方の直線状縁部と第２外装部１３Ｂにおける他方の直線状縁部とを止める止め具１５とを備える。なお、蝶番１４にバネなどを用い、止め具１５を不要としてもよい。   The integrated non-contact probe 1 further includes a semi-cylindrical first exterior portion 13A that houses and holds the first non-contact voltage probe portion 11A and the first non-contact current probe portion 12A, Second non-contact type voltage probe portion 11B and second non-contact type current probe portion 12B are accommodated and held in a semi-cylindrical second exterior portion 13B, and one linear edge portion in the first exterior portion 13A And a hinge 14 that connects one linear edge in the second exterior part 13B, and a stopper that stops the other linear edge in the first exterior part 13A and the other linear edge in the second exterior part 13B. And a tool 15. Note that a spring or the like may be used for the hinge 14 and the stopper 15 may be unnecessary.

（非接触型電圧プローブ１１の詳細構成）
第１の非接触型電圧プローブ部分１１Ａと第２の非接触型電圧プローブ部分１１Ｂはそれぞれ、半円柱状且つ導電性の例えばスポンジのような素材のもの（以下、導電性スポンジと記載する。）１１１と、導電性スポンジ１１１の湾曲部分を被う湾曲した金属板１１２と、導電性スポンジ１１１の平面部分を被う絶縁シート１１３とを備える。 (Detailed configuration of the non-contact voltage probe 11)
The first non-contact voltage probe portion 11A and the second non-contact voltage probe portion 11B are each made of a semi-cylindrical and conductive material such as a sponge (hereinafter referred to as a conductive sponge). 111, a curved metal plate 112 covering the curved portion of the conductive sponge 111, and an insulating sheet 113 covering the flat portion of the conductive sponge 111.

（非接触型電流プローブ１２の詳細構成）
第１の非接触型電流プローブ部分１２Ａと第２の非接触型電流プローブ部分１２Ｂはそれぞれ、コア材１２１に巻線１２２を巻回した構成を有する。 (Detailed configuration of the non-contact type current probe 12)
Each of the first non-contact type current probe portion 12A and the second non-contact type current probe portion 12B has a configuration in which a winding 122 is wound around a core material 121.

（被測定ケーブル２への一体型非接触プローブ１の取り付け）
上記のように、一体型非接触プローブ１は、蝶番１４を軸に２つの部分が開閉自在となっており、開いた状態で被測定ケーブル２を挟み閉じることで、簡単に被測定ケーブル２に取り付けることができる。つまり、１回の操作で、電圧、電流双方の測定準備ができる。 (Attaching the integrated non-contact probe 1 to the cable to be measured 2)
As described above, the integrated non-contact probe 1 has two parts that can be opened and closed with the hinge 14 as an axis, and can be easily attached to the cable to be measured 2 by sandwiching and closing the cable to be measured 2 in an open state. Can be attached. That is, it is possible to prepare for measurement of both voltage and current in one operation.

その際、導電性スポンジ１１１の平面部分どうしが絶縁シート１１３を介して被測定ケーブル２を挟むこととなる。つまり、導電性スポンジ１１１が被測定ケーブル２に押されて窪み、その反発力で被測定ケーブル２の位置を固定させる。これにより、非接触型電圧プローブ１１および非接触型電流プローブ１２の位置は、被測定ケーブル２を中心とした同心円の位置に固定される。   At that time, the flat portions of the conductive sponge 111 sandwich the cable to be measured 2 via the insulating sheet 113. That is, the conductive sponge 111 is depressed by the measured cable 2 and the position of the measured cable 2 is fixed by the repulsive force. Accordingly, the positions of the non-contact type voltage probe 11 and the non-contact type current probe 12 are fixed at concentric positions with the measured cable 2 as the center.

（非接触型電圧プローブ１１による電圧測定）
非接触型電圧プローブ１１については、金属板１１２と大地間の電圧、つまり、導電性スポンジ１１１と大地間の電圧（ノイズ電圧）が測定される。その際、上記のように非接触型電圧プローブ１１の位置が同心円の位置に固定されるので、被測定ケーブル２が動いて位置が変わっても、測定値の変化は少ない。つまり、バラツキを少なくすることができる。 (Voltage measurement with non-contact voltage probe 11)
For the non-contact voltage probe 11, a voltage between the metal plate 112 and the ground, that is, a voltage (noise voltage) between the conductive sponge 111 and the ground is measured. At this time, since the position of the non-contact voltage probe 11 is fixed at a concentric position as described above, even if the cable under measurement 2 moves and changes its position, the measurement value hardly changes. That is, variation can be reduced.

また、金属板１１２が、外来ノイズを低減し、正確な測定値を得ることができる。   Further, the metal plate 112 can reduce external noise and obtain an accurate measurement value.

（非接触型電流プローブ１２による電流測定）
また、一体型非接触プローブ１によれば、電圧だけでなく、同時に電流も測定できる。 (Current measurement by the non-contact type current probe 12)
Further, according to the integrated non-contact probe 1, not only the voltage but also the current can be measured simultaneously.

つまり、非接触型電流プローブ１２については、巻線１２２に流れる電流（ノイズ電流）が測定される。その際、上記のように非接触型電流プローブ１２の位置が同心円の位置に固定されるので、被測定ケーブル２が動いて位置が変わっても、測定値の変化は少ない。つまり、バラツキを少なくすることができる。   That is, for the non-contact type current probe 12, the current (noise current) flowing through the winding 122 is measured. At this time, as described above, the position of the non-contact type current probe 12 is fixed at a concentric position, so that even if the cable to be measured 2 moves and changes its position, the measurement value hardly changes. That is, variation can be reduced.

（一体型非接触プローブ１の被測定ケーブル２からの取り外し）
一体型非接触プローブ１は、蝶番１４を軸に開閉自在な２つの部分を開き、被測定ケーブル２から離すことで、簡単に取り外すことができる。つまり、１回の操作で、電圧、電流双方の測定機材を撤収できる。 (Removal of the integrated non-contact probe 1 from the cable to be measured 2)
The integrated non-contact probe 1 can be easily removed by opening two parts that can be opened and closed with a hinge 14 as an axis and separating the hinge 14 from the cable to be measured 2. In other words, both voltage and current measurement equipment can be withdrawn in a single operation.

以上のように、本実施の形態に係る一体型非接触プローブ１によれば、非接触型電圧プローブ１１と非接触型電流プローブ１２とを、被測定ケーブル２の長さ方向での同じ位置において、被測定ケーブル２を中心とする同心円状に配置したので、被測定ケーブル２と大地間の電圧および電流を非接触で同時に測定することができる。   As described above, according to the integrated non-contact probe 1 according to the present embodiment, the non-contact voltage probe 11 and the non-contact current probe 12 are placed at the same position in the length direction of the cable 2 to be measured. Since the cables to be measured 2 are arranged concentrically around the cable 2 to be measured, the voltage and current between the cable to be measured 2 and the ground can be simultaneously measured without contact.

また、蝶番１４を軸に２つの部分が開閉自在としたことで、被測定ケーブル２への一体型非接触プローブ１の取り付け、取り外しを容易に行うことができる。   In addition, since the two parts can be opened and closed with the hinge 14 as an axis, the integrated non-contact probe 1 can be easily attached to and detached from the cable 2 to be measured.

また、第１の非接触型電圧プローブ部分１１Ａと第２の非接触型電圧プローブ部分１１Ｂはそれぞれ、半円柱状の導電性スポンジ１１１を備え、被測定ケーブル２を各導電性スポンジ１１１の平面部分どうしで挟むことで、非接触型電圧プローブ１１と非接触型電流プローブ１２の位置を同心円の位置に固定でき、測定値のバラツキを少なくすることができる。   Further, each of the first non-contact voltage probe portion 11A and the second non-contact voltage probe portion 11B includes a semi-cylindrical conductive sponge 111, and the measured cable 2 is connected to the planar portion of each conductive sponge 111. By sandwiching them, the positions of the non-contact voltage probe 11 and the non-contact current probe 12 can be fixed at concentric positions, and variations in measured values can be reduced.

なお、本発明の一体型非接触プローブは、上記構成に限るものでなく、例えば、非接触型電圧プローブ１を内側に配置した場合は、被測定ケーブル２を導電性スポンジで挟み、導電性スポンジと大地間の電圧を測定するように構成すればよい。導電性スポンジは、上記のように２つに分けるのでなく、例えば、巻き付けて被測定ケーブル２を挟むことで、非接触型電圧プローブ１を同心円の位置に固定できる。   The integrated non-contact probe of the present invention is not limited to the above configuration. For example, when the non-contact voltage probe 1 is arranged on the inner side, the cable to be measured 2 is sandwiched between the conductive sponges and the conductive sponge is used. What is necessary is just to comprise so that the voltage between earth and ground may be measured. The conductive sponge is not divided into two as described above. For example, the non-contact voltage probe 1 can be fixed at a concentric position by winding and sandwiching the cable to be measured 2.

また、絶縁シート１１３は必須の要素ではなく、例えば、被測定ケーブル２に傷がないと分かっているなら、使用しなくてよい。   Further, the insulating sheet 113 is not an essential element. For example, if it is known that the cable to be measured 2 is not damaged, it may not be used.

また、金属板１１２は必須の要素ではなく、例えば、外来ノイズがないと分かっているなら、使用しなくてよい。   Further, the metal plate 112 is not an essential element. For example, if it is known that there is no external noise, it may not be used.

また、一体型非接触プローブ１では、非接触型電圧プローブ１１を内側、非接触型電流プローブ１２を外側としたが、逆としてもよい。その際、導電性スポンジ１１１に代えて、絶縁体などを用い、その外側を金属で被い、その金属と大地間の電位を測定すればよい。   In the integrated non-contact probe 1, the non-contact voltage probe 11 is set on the inner side and the non-contact type current probe 12 is set on the outer side. At that time, instead of the conductive sponge 111, an insulator or the like may be used, and the outside thereof may be covered with a metal, and the potential between the metal and the ground may be measured.

１…一体型非接触プローブ
２…被測定ケーブル
１１…非接触型電圧プローブ
１１Ａ…第１の非接触型電圧プローブ部分
１１Ｂ…第２の非接触型電圧プローブ部分
１２…非接触型電流プローブ
１２Ａ…第１の非接触型電流プローブ部分
１２Ｂ…第２の非接触型電流プローブ部分
１３Ａ…第１外装部
１３Ｂ…第２外装部
１４…蝶番
１５…止め具
１１１…導電性スポンジ
１１２…金属板
１１３…絶縁シート
１２１…コア材
１２２…巻線 DESCRIPTION OF SYMBOLS 1 ... Integrated non-contact probe 2 ... Cable to be measured 11 ... Non-contact voltage probe 11A ... 1st non-contact type voltage probe part 11B ... 2nd non-contact type voltage probe part 12 ... Non-contact type current probe 12A ... 1st non-contact type current probe part 12B ... 2nd non-contact type current probe part 13A ... 1st exterior part 13B ... 2nd exterior part 14 ... Hinge 15 ... Stopper 111 ... Conductive sponge 112 ... Metal plate 113 ... Insulating sheet 121 ... Core material 122 ... Winding

Claims (3)

被測定ケーブルを取り囲んで前記被測定ケーブルと大地間の電圧を測定する非接触型電圧プローブと、前記被測定ケーブルを取り囲んで前記被測定ケーブルに流れる電流を測定する非接触型電流プローブとを備え、
前記非接触型電圧プローブと前記非接触型電流プローブとが、前記被測定ケーブルの長さ方向での同じ位置において、前記被測定ケーブルを中心とする同心円状に配置され、
前記非接触型電圧プローブは、前記被測定ケーブルを導電性スポンジの平面部分どうしで挟み、前記導電性スポンジと大地間の電圧を測定するように構成される
ことを特徴とする一体型非接触プローブ。 A non-contact type voltage probe that surrounds the cable to be measured and measures a voltage between the cable to be measured and the ground; and a non-contact type current probe that surrounds the cable to be measured and measures a current flowing through the cable to be measured. ,
The non-contact type voltage probe and the non-contact type current probe are arranged concentrically around the measured cable at the same position in the length direction of the measured cable ,
The non-contact voltage probe, said measured cable sandwiched between flat portions each other of the conductive sponge, integrated non-contact probe, wherein that will be configured to measure a voltage between the conductive sponge and earth . 前記非接触型電圧プローブは、前記被測定ケーブルの周囲方向において第１の非接触型電圧プローブ部分と第２の非接触型電圧プローブ部分に分割され、
前記非接触型電流プローブは、前記被測定ケーブルの周囲方向において第１の非接触型電流プローブ部分と第２の非接触型電流プローブ部分に分割され、
前記一体型非接触プローブは、
前記第１の非接触型電圧プローブ部分と前記第１の非接触型電流プローブ部分とを収容して保持する半円筒状の第１外装部と、
前記第２の非接触型電圧プローブ部分と前記第２の非接触型電流プローブ部分とを収容して保持する半円筒状の第２外装部と、
前記第１外装部における一方の直線状縁部と前記第２外装部における一方の直線状縁部とを接続する蝶番と
を備えることを特徴とする請求項１記載の一体型非接触プローブ。 The non-contact type voltage probe is divided into a first non-contact type voltage probe portion and a second non-contact type voltage probe portion in the circumferential direction of the cable to be measured,
The non-contact type current probe is divided into a first non-contact type current probe part and a second non-contact type current probe part in the circumferential direction of the cable to be measured,
The integrated non-contact probe is:
A semi-cylindrical first exterior portion that houses and holds the first non-contact voltage probe portion and the first non-contact current probe portion;
A semi-cylindrical second exterior portion that houses and holds the second non-contact voltage probe portion and the second non-contact current probe portion;
2. The integrated non-contact probe according to claim 1, further comprising: a hinge connecting one linear edge of the first exterior part and one linear edge of the second exterior part. 前記第１の非接触型電圧プローブ部分と前記第２の非接触型電圧プローブ部分はそれぞれ、半円柱状の導電性スポンジを備える
ことを特徴とする請求項２記載の一体型非接触プローブ。 Each of the first non-contact voltage probe portion and the second non-contact voltage probe portion of the Ru with the semicylindrical conductive sponge
Integrated non-contact probe according to claim 2, wherein the this.
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